Simple function music player

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>音乐播放器</title>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
        }
        body{
            width: 320px;
            overflow: hidden;
            margin: 20px auto;
        }
        header,footer{
            height: 40px;
            line-height: 40px;
            background-color: orange;
            text-align: center;
        }
        li{
            height: 50px;
            line-height: 50px;
            border: 1px solid red;
            border-top: none;
            font-size: 15px;
            text-indent: 20px;
            list-style: none;
        }
        #ado{
            width: 100%;
            height: 20px;
            margin-top: 10px; 
        } 
        .Sty { 
            background-Color : Pink ; 
        } 
    </ style > 
</ head > 
< body > 
    < header > Music player </ header > 
        < sectionTop > 
            < UL > 
                < Li > Dandelion </ Li > 
                < li > sunny </ li > 
                < li > say good cry </ li > 
                <at the> English </ li > 
                < li > laugh Travels </ li > 
            </ ul > 
        </ Section > 
    < Audio src = "" the above mentioned id = "ADO" Controls = "" > </ Audio > 
    < footer > 
        currently playing is : < span ID = "CON" > </ span > 
    </ footer > 
    < Script > 
         var LIS = Document.querySelectorAll ( ' him' )
          Var ADO = document.querySelector ( ' #ado ' )
          var CON = document.querySelector ( ' #CON ' )
          var ARR = [ ' Audio / pugongyingdeyueding.mp3 ' , ' Audio / qingtian.mp3 ' , ' Audio / shuohaobuku .mp3 ' , ' Audio / Sophie Rose - Famous.mp3 ' , ' Audio / xiyouji.mp3 ' ]
          for ( var i=0;i<lis.length;i++){
             lis[i].onclick=function(){
                 for(var i=0;i<lis.length;i++){
                     if(this==lis[i]){
                         lis[i].className='sty'
                         ado.src=arr[i];
                         ado.play();
                         con.innerHTML = lis [i] .innerHTML;
                         
@                          AutoPlay: 
                         var A = I;
                         ado.onended=function(){
                             A ++ ;
                              IF (A > lis.length - . 1 ) { // If the music player to the last, when a music jump to the first piece of music 
                                 A = 0 ;
                             }  
                             for(var j=0;j<lis.length;j++){
                                 lis[j].className=''
                             }
                             con.innerHTML=lis[a].innerHTML;
                             ado.src=arr[a]
                             ado.play()
                             lis[a].className='sty'
                         }
                     }else{
                         lis[i].className=''
                     }
                     
                 }
             }
         }
    </script>
</body>
</html>
Simple function music player

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